* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none;
    font-family: "FangYuanTi";
    font-weight: 600;
}

a {
    text-decoration: none;
}

li {
    list-style: none;
}

.fill-span {
    margin: 0 0.375rem;
    padding: 0 2.5rem;
    border-bottom: 2px solid #ccc;
}

::-webkit-scrollbar {
    width: 6px;
    opacity: 0;
    transition: all 0.3s;
    :hover {
        opacity: 1;
    }
}

::-webkit-scrollbar-thumb {
    cursor: pointer;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    &:hover {
        background-color: rgba(0, 0, 0, 0.4);
    }
}

::-webkit-scrollbar-track {
    border-radius: 10px;
}

@font-face {
    font-family: "FangYuanTi";
    src: url("https://ichl-stu-bucket.oss-cn-shenzhen.aliyuncs.com/AlimamaFangYuanTiVF-Thin.ttf");
    font-display: swap;
}

.backtop-container {
    position: fixed;
    bottom: 3.125rem;
    right: 40px;
    transform: translateX(200%);
    width: 3.125rem;
    height: 3.125rem;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px #ccc;
    transition: all 0.4s;
    z-index: 99;
    &:hover {
      box-shadow: 0 0 20px #ccc;
      .font {
        color: #409eff;
      }
    }
    &.active {
      transform: none;
    }

    .font {
      color: #a3a3a3;
      font-size: 1.25rem;
      transition: all 0.3s;
    }
  }
